/Engine/Source/Runtime/Engine/Classes/Materials/MaterialExpressionVolumetricAdvancedMaterialOutput.h
This is currently only needed by the new HLSL translator Should probably be merged withUMaterialExpressionbase interface, which already provides GetInputType/GetOutputType
virtual [UE::Shader::EValueType](API\Runtime\Engine\Shader\UE__Shader__EValueType) GetCustomOutputType ( int32 OutputIndex ) const